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Simulation Platform of Multi-Pulse Photoacoustic Microscopy Based on K-Space Pseudospectral Method

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Journal of Applied Mathematics and Physics 2020年第11期8卷 2540-2548页

作者： Xianlin Song Jianshuang Wei jianmin xiong Lingfang Song School of Information Engineering Nanchang University Nanchang China Britton Chance Center for Biomedical Photonics Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology Wuhan China Moe Key Laboratory of Biomedical Photonics of Ministry of Education Department of Biomedical Engineering Huazhong University of Science and Technology Wuhan China Nanchang Normal University Nanchang China

Photoacoustic imaging has emerged in the past decades. Compared with the traditional medical imaging mode, it has better imaging performance and has great development potential in the field of biological imaging. In traditional photoacoustic microscopy, a single laser pulse is generally used to irradiate the sample to produce photoacoustic signal. And sig-nal-to-noise ratio (SNR) is a very important indicator for photoacoustic im-aging. In order to obtain the image with high SNR, multiple acquisition or increasing laser pulse energy is usually adopted. The former will lead to slower imaging speed, and the latter will lead to photobleaching or pho-totoxicity. Here, we propose multi-pulse photoacoustic microscopy, the photoacoustic signals were stimulated sequentially using multiple laser pulses in each A line data acquisition. In order to verify the feasibility of this method, a multi-pulse photoacoustic imaging simulation platform is established using k-Wave toolbox. The performance of multi-pulse photo-acoustic imaging is verified through the three scanning modes of photoa-coustic microscopy A-scan, B-scan, and C-scan. The results indicate that the SNR is proportion to the number of laser pulses used, high SNR can be achieved by low-energy laser pulse. This work will help to expand the ap-plication of photoacoustic imaging.

关键词： Photoacoustic Microscopy Multiple Laser Pulses Signal-to-Noise Ratio K-Wave

Security enhancement for OFDM-UWOC system using three-layer chaotic encryption and chaotic DFT precoding

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Chinese Optics Letters 2022年第11期20卷 7-13页

作者： Huan Deng Zihao Du jianmin xiong Xingqi Yang Yan Hua Jing Xu Optical Communications Laboratory Ocean CollegeZhejiang UniversityZhoushan 316021China Key Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province Ocean CollegeZhejiang UniversityZhoushan 316021China

Security is one of the key issues in communications,but it has not attracted much attention in the field of underwater wireless optical communication(UWOC).This Letter proposes a UWOC encryption scheme with orthogonal frequency division multiplexing(OFDM)modulation,based on the three-layer chaotic encryption and chaotic discrete Fourier transform(DFT)*** three-layer chaotic encryption processes are bit stream diffusion,in-phase/quadrature encryption,and time-frequency *** multi-fold data encryption,the scheme can create a keyspace of 9.7×10^(179),effectively resisting brute force attacks and chosen-plaintext attacks.A 3 Gbit/s encrypted OFDM signal is successfully transmitted over a 7 m water channel.

关键词： security underwater wireless optical communication chaotic encryption chosen-plaintext attacks

Simulation Platform of Multi-Pulse Photoacoustic Microscopy Based on K-Space Pseudospectral Method

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Simulation Platform of Multi-Pulse Photoacoustic Microscopy ...

作者： Xianlin Song Jianshuang Wei jianmin xiong Lingfang Song School of Information Engineering Nanchang University Britton Chance Center for Biomedical Photonics Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology Moe Key Laboratory of Biomedical Photonics of Ministry of Education Department of Biomedical EngineeringHuazhong University of Science and Technology Nanchang Normal University

Photoacoustic imaging has emerged in the past decades. Compared with the traditional medical imaging mode, it has better imaging performance and has great development potential in the field of biological imaging. In traditional photoacoustic microscopy, a single laser pulse is generally used to irradiate the sample to produce photoacoustic signal. And signal-to-noise ratio（SNR） is a very important indicator for photoacoustic imaging. In order to obtain the image with high SNR, multiple acquisition or increasing laser pulse energy is usually adopted. The former will lead to slower imaging speed, and the latter will lead to photobleaching or phototoxicity. Here, we propose multi-pulse photoacoustic microscopy, the photoacoustic signals were stimulated sequentially using multiple laser pulses in each A line data acquisition. In order to verify the feasibility of this method, a multi-pulse photoacoustic imaging simulation platform is established using k-Wave toolbox. The performance of multi-pulse photoacoustic imaging is verified through the three scanning modes of photoacoustic microscopy A-scan, B-scan, and C-scan. The results indicate that the SNR is proportion to the number of laser pulses used, high SNR can be achieved by low-energy laser pulse. This work will help to expand the application of photoacoustic imaging.

关键词： Photoacoustic Microscopy Multiple Laser Pulses Signal-to-Noise Ratio K-Wave

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书次号研究中的几个问题

图书馆建设 2005年第3期 55-57页

作者：熊健敏南京大学信息管理系江苏南京210093

文章从书次号的概念和作用入手,分析了书次号研究中存在的一些问题,提出应当科学认识书次号统一的概念,并探讨了书次号的标准化问题。

关键词：书次号标准化问题科学认识概念

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西文图书编目中RDA书目记录使用探析

图书馆 2014年第3期 124-126页

作者：孟琼熊健敏浙江大学图书与信息中心浙江杭州310027

随着国外图书馆实施RDA进程的不断加快,通过套录数据进行西文图书编目时RDA书目记录日趋增多,为此编目人员也面临着一些困惑。本文通过对RDA记录与AACR2记录进行比较分析,结合具体实例,探讨西文图书编目中RDA记录的理解与使用。

关键词： RDA AACR2 书目记录西文图书编目

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蜂窝纸板力学性能的试验研究

中国机械工程 2006年第S2期17卷 147-149页

作者：李厚民熊健民朱若燕李进平湖北工业大学武汉430068 武汉荷力胜蜂窝材料有限公司武汉430056

在试验的基础上,研究蜂窝纸板的力学性能,得到了蜂窝纸板的压缩曲线及卸载曲线、二次加载曲线。结果表明,二次加载时,蜂窝纸板的应力—应变曲线将首先上升到预压时的卸载点。二次加载曲线表明,蜂窝纸板在用作缓冲材料时,若进行预压,使... 详细信息

在试验的基础上,研究蜂窝纸板的力学性能,得到了蜂窝纸板的压缩曲线及卸载曲线、二次加载曲线。结果表明,二次加载时,蜂窝纸板的应力—应变曲线将首先上升到预压时的卸载点。二次加载曲线表明,蜂窝纸板在用作缓冲材料时,若进行预压,使之进入屈服阶段,则缓冲效果会更好。

关键词：蜂窝纸板力学性能卸载二次加载

语义Web服务在业务协同与供应链集成中的应用

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中国机械工程 2008年第4期19卷 410-413页

作者：宋庭新黄必清熊健民魏春梅清华大学国家CIMS工程技术研究中心北京100084 湖北工业大学武汉430068

在面向服务架构中,Web服务组件由于不具有语义特征,难于在供应链的业务协同中实现流程的自动编排。通过引入领域本体,提出了一种基于语义Web服务的供应链协同和集成框架,讨论了语义Web服务的过程以及服务匹配和组合算法,并以物流服务为... 详细信息

在面向服务架构中,Web服务组件由于不具有语义特征,难于在供应链的业务协同中实现流程的自动编排。通过引入领域本体,提出了一种基于语义Web服务的供应链协同和集成框架,讨论了语义Web服务的过程以及服务匹配和组合算法,并以物流服务为例说明了业务协作流程的自动组合过程。结果表明,语义Web服务在面向服务的供应链集成中具有流程自动化合成和灵活重构的敏捷性特点。

关键词：语义Web服务业务协同敏捷供应链集成面向服务架构

A Novel Family of Catalysts Comprising a Supported Metaland a Supported Aqueous-Phase Catalyst

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催化学报 2003年第2期24卷 81-82页

作者： ZHU Hejun, DING Yunjie, YAN Li, xiong jianmin, LI Xuemin, ZHANG Lianzhong, LIN Peizi, HUANG Shiyu, LIN Liwu (Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China) Chinese Acad Sci Dalian Inst Chem Phys Dalian 116023 Liaoning Peoples R China

Hydrofining catalysts contain Mn-Ni, Ni-Mo, Ni-W, Co-Mo, Mo, W, Ni, Co, etc and many studies of these catalysts are concerned with the addition of phosphorus or compounds containing phosphorus to give Ni-Mo-P, W-Ni-P, Mo-P, Ni-P, W-P, Co-Mo-P, NiPS3, andMo-Ni-W-P~[1'2]. The effect of adding phosphorus or phosphorus-containing compounds on the structure and hydrodenitrogena-tion (HDN) and hydrodesulfurization (HDS) activity was discussed . The results have shown that phosphorus-containing compounds can be used as promoters and stablizers of hydrofining catalysts. Robinson et al tested fresh and pretreated (in H_2S/H_2 , H_2, or He) unsupported nickel- or cobalt-phosphorus compounds using quinoline HDN. During the pretreatment or reaction, all compounds were transformed into Ni2P or Cc^P. Stinner et al prepared transition metal phosphides (Ni_2P, Co_2P, MoP, WP, etc) by reducing metal oxide/ phosphate precursors in a flow of H_2, and tested their activity for the HDN of o-propylaniline. However, the synthesis, structure, and HDN and HDS activity of phosphide catalysts were seldom studied , especially in simultaneous HDN, HDS, and hydrogenation (HYD). In this paper, the preparation of unsupported molybdenum phosphide by direct reduction of an amorphous phosphate precursor in H_2 at a relatively low temperature is discussed and the catalytic activity for simultaneous HDN, HDS, and HYD is determined.

关键词：水相催化剂复合型负载催化剂金属催化活性

中西融合理念下的文化自觉与文化妥协——陈季同、辜鸿铭和林语堂“翻译中国”文化解读

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北京化工大学学报（社会科学版） 2024年第3期 96-102页

作者：熊建闽福建商学院外国语学院语言、翻译与脑认知研究中心福建福州350016

陈季同、辜鸿铭和林语堂在“翻译中国”的跨文化传播实践中展现出了鲜明的文化自觉意识,具体表现为中西文化冲突的问题导向意识、目的语语境趋同的读者接受意识和核心价值观的话语融合意识。他们横贯中西文化,裁选具有传统中国价值且与... 详细信息

陈季同、辜鸿铭和林语堂在“翻译中国”的跨文化传播实践中展现出了鲜明的文化自觉意识,具体表现为中西文化冲突的问题导向意识、目的语语境趋同的读者接受意识和核心价值观的话语融合意识。他们横贯中西文化,裁选具有传统中国价值且与西方人文精神相契合的文化元素,通过创译蕴含中国印记的文学作品,力图化解中西隔膜,提升中国文化形象,实现中西融合的文化理想。同时,他们“翻译中国”的文化传播实践是用西方话语系统阐释中国,以弥合民族文化自我形象与他者形象的落差,这是对强势目的语规范系统的文化妥协,导致他们参照西方现代语境读取出的理想化的中华文化形象和现实中国之间存在脱节与错位。

关键词：中西文化融合文化自觉文化妥协翻译

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